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(No Model.) s sheets-sheet 2f J. A. BAILEY.

. OA LOCK.

No. 421,806. Patented Feb. 18, 1890.

(No Model.) s sheets-snags a.l

J. A. BAILEY.

OAR 1.00K.

No. 421,806. Patented Feb. 18, 1890.

Zzzas wezlloi UNITED STATES PATENT A OEEICE.

I JOHN A. BAILEY, OF WASHINGTON, DISTRICT OF COLUMBIA.

OAR-LOCK.

SPECIFICATION forming part of Letters Patent No. 421,806, dated February 18, 189i).

Application iled October 29, 1889. Serial No. 328,518. (No model.)

To all whom it may concern,.-

Be it known that I, .l OHN A. BAILEY, a citizen of the United States, residing at Washington, District of Columbia, have invented a new and useful Improvement in Oar-Locks, of which the following is a specification, reference being had to the accompanying drawings, which form a part of the same.

The object of my invention is to provide an oar-lock which may be adj usted to any desired elevation, so as to conform to the height of the knees of the oarsman and thereby relieve him froln any liability to be interfered with by the handle of the oar. p

A further object is to provide an oar-lock which is simple in construction, and therefore consisting of but few parts, and one that is readily attachable and detachable to and from the gunwale of the boat, all of which will be hereinafter more fully described, and set forth in the claims.

Referring to the drawings, Figure l is a perspective view showing my improved oar-lock attached to the gunwale of a boat. Fig. 2 is an elevation of the same, the broken line indicating a part of the height to which the oarlock may be elevated. Fig. 3 is a modification of myimproved oar-lock, showingatholepiece of the usual construction and having a pintle provided with a series of circumferential grooves throughout its length. Fig. 4 is a plan view of the escutcheon, showing a lip for engaging the grooves on the pintle shown in Fig. 3. Fig. 5 shows the screw-threaded pintle having a thole-piece of the usual construction thereon and a correspondinglyscrew-threaded socket for retaining the pintle. Fig. 6 shows another modification of my oar-lock in which the circumferential grooves are substituted for the screw-threads shown in Fig. l.

In the drawings, A represents a section of the side of a boat; B, the gunwale thereof; C, the thole-piece, and D the screw-threaded pintle upon which it is located. The thole-piece preferably has one free thole, which is indicated by the letter E. The opposite one is integral with the tubular screw-threaded portion c, through which thepintle passes. The pintle is preferably screw-threaded throughout its entire length, though this is not essential, as either end thereof may be provided with a fixed head or cap,which would permit the removal and replacement of the oar only at one free end-that is, the end opposite the fixed head or cap. I prefer, however, to construct the device as shown in Figs. l and 5- that is, screw-threaded throughoutits length.

On the gunwale of the boat I insert one or two plates or escutcheons l) in suitable mortises therefor, and through these and the gunwale is an opening, through which the pintle passes. At the lower end of the pintle, on the under side of the gunwale, a threaded nut a is attached, and interposed between the upthe oar-lock are two threaded nuts also. They are indicated by the letter a. These, together with the under one, form a lock-nut and serve to hold the pintle rigidly in place. One of the upper nuts may be dispensed with and a washer substituted therefor.

It will be understood that though I have described and shown certain means for securing the "pintle in position, yet I do not limit myself to these, as other modifications will readily suggest themselves.

The oar-lock proper has one of its tholes enlarged and provided with a screw-threaded opening for the passage of the pintle. This part is made sufficiently strong and durable to stand the greatest strain that may be put upon it. The headE may be screw-threaded or it may be integral with the pintle. pintle is screw-threaded throughout its length, the entire device lnay beremoved at will from the gunwale; or only the thole-piece may be so removed, if desired.

In Figs. 3 and C Il have shown a modification of 'the'pintle In theseI have substituted a series of circumferential grooves along the pintle for the screw-threads. The grooves have each a small cut-away portion or recess d, all in the same alignment. The escutcheon has a lip orprojection b' for engaging any one of the grooves after the adj ustment of the pintle. man has but to turn the pintle until the recess d registers with the lip l), when it may be raised or lowered, as desired, as the lip will afford it a free and easy passage. When the pintle is placed at the desired height, ahalf-turn thereof will lock it, and it will be ready for use.

Figs. 3 and 5 show the pintle located in a If the In thisniodiiication in practice the oars- 65 per side of the gunwale and the under side of f tenen-socket. This is seenred in a lnertise in the gnnwaie, and thereby gains greater strength and durabiiitf.

The operation of the device is simple and may be readily understood from the foregoing description in connection with the drawings.

In operation the oarslnan adjusts the thoiepieee to the desired height by rotating,` Vit on tle pintle, when itI will be ready .for use.

n use the oscillatinginoveinentef the thoiepiece will be in the are Ot a Circle the radius of which is so slnail as te be searee'iy pereeptible and the Wear on the threads at thenlinimlun. 3y this arrangement the dii'iieuity which has heretofore been experienced by oarsmen will be overcome, and eaeh one, Without regard to its height, may adjust the oarloek to suit the distance from his `feet to his knees.

JOHN A. BAILEY.

Witnesses:

G RANVILLE BIliLLs, J. B. llnl-nmuurr. 

